docs: def _property_table():
      """Download the PDB -> resolution table directly from the RCSB PDB REST service.
  
      See the other fields that you can get here: http://www.rcsb.org/pdb/results/reportField.do
  
      Returns:
          Pandas DataFrame: table of structureId as the index, resolution and experimentalTechnique as the columns
  
      """
      url = 'http://www.rcsb.org/pdb/rest/customReport.csv?pdbids=*&customReportColumns=structureId,resolution,experimentalTechnique,releaseDate&service=wsfile&format=csv'
      r = requests.get(url)
      p = pd.read_csv(StringIO(r.text)).set_index('structureId')
      return p